Chop the chicken into small 1/4-inch to 1/2-inch cubes. Sprinkle 1/2 teaspoon of salt over the chicken and mix to combine. Set the chicken aside for about 10 minutes.
Heat a wok or large sauté pan over medium-high heat. Swirl in a tablespoon of oil and add the whisked eggs. Use a spatula to quickly scramble the eggs, breaking the curds into smaller pieces as they come together. Transfer the eggs to a plate.
Add another tablespoon of oil in the wok or pan. Add the chicken and cook for 4 to 5 minutes, stirring occasionally. Turn off the heat and transfer the cooked chicken to a plate.
Swirl 1 tablespoon of oil into the wok over medium-high heat. Add the diced onions and cook them for 1 minute, until they start to soften. Mix in the minced garlic and ginger and cook until fragrant, about 30 seconds. Add the diced carrots and cook for 2 minutes, stirring frequently. Add 1/2 teaspoon salt and the peas, and stir to incorporate.
Add the rice to the wok or pan on top of the vegetables and stir to combine. Using the back of your spatula, smash any large chunks of rice to break them apart. Add the white and green parts of the sliced scallions and five-spice powder. Stir to incorporate.
Drizzle the soy sauce and sesame oil over the rice and stir to incorporate. Stir in the cooked chicken, scrambled eggs, and the dark parts of the scallions. Stir briefly to bring it together, and cook for another 1 to 2 minutes.
Taste, and add more soy sauce if necessary. Serve immediately.